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<?php
namespace SMW\Services;
use Onoi\CallbackContainer\ContainerBuilder;
use SMW\DataValueFactory;
use SMW\DataValues\InfoLinksProvider;
use SMW\DataValues\StringValue;
use SMW\DataValues\ValueFormatters\DispatchingDataValueFormatter;
use SMW\DataValues\ValueFormatters\NoValueFormatter;
use SMW\DataValues\ValueFormatters\ValueFormatter;
use SMW\DataValues\ValueParsers\ValueParser;
use SMW\DataValues\ValueValidators\ConstraintValueValidator;
use SMW\PropertyRestrictionExaminer;
use SMW\PropertySpecificationLookup;
use SMWDataValue as DataValue;
use SMWNumberValue as NumberValue;
use SMWTimeValue as TimeValue;
/**
* @private
*
* This class provides service and factory functions for DataValue objects and
* are only to be used for those objects.
*
* @license GNU GPL v2+
* @since 2.5
*
* @author mwjames
*/
class DataValueServiceFactory {
/**
* Indicates a DataValue service
*/
const SERVICE_FILE = 'DataValueServices.php';
/**
* Indicates a DataValue service
*/
const TYPE_INSTANCE = '__dv.';
/**
* Indicates a ValueParser service
*/
const TYPE_PARSER = '__dv.parser.';
/**
* Indicates a ValueFormatter service
*/
const TYPE_FORMATTER = '__dv.formatter.';
/**
* Indicates a ValueValidator service
*/
const TYPE_VALIDATOR = '__dv.validator.';
/**
* Extraneous service
*/
const TYPE_EXT_FUNCTION = '__dv.ext.func.';
/**
* @var ContainerBuilder
*/
private $containerBuilder;
/**
* @var DispatchingDataValueFormatter
*/
private $dispatchingDataValueFormatter = null;
/**
* @since 2.5
*/
public function __construct( ContainerBuilder $containerBuilder ) {
$this->containerBuilder = $containerBuilder;
}
/**
* @since 2.5
*
* @param DataValue $dataValue
*
* @return InfoLinksProvider
*/
public function newInfoLinksProvider( DataValue $dataValue ) {
return new InfoLinksProvider( $dataValue, $this->getPropertySpecificationLookup() );
}
/**
* @since 3.0
*
* @return DataValueFactory
*/
public function getDataValueFactory() {
return DataValueFactory::getInstance();
}
/**
* Imported functions registered with DataTypeRegistry::registerExtraneousFunction
*
* @since 2.5
*
* @param array $extraneousFunctions
*/
public function importExtraneousFunctions( array $extraneousFunctions ) {
foreach ( $extraneousFunctions as $serviceName => $calllback ) {
$this->containerBuilder->registerCallback( self::TYPE_EXT_FUNCTION . $serviceName, $calllback );
}
}
/**
* @since 2.5
*
* @param string $serviceName
*
* @return mixed
*/
public function newExtraneousFunctionByName( $serviceName ) {
return $this->containerBuilder->create( self::TYPE_EXT_FUNCTION . $serviceName );
}
/**
* @since 2.5
*
* @param string $typeId
* @param string $class
*
* @return DataValue
*/
public function newDataValueByType( $typeId, $class ) {
if ( $this->containerBuilder->isRegistered( self::TYPE_INSTANCE . $typeId ) ) {
return $this->containerBuilder->create( self::TYPE_INSTANCE . $typeId );
}
// Legacy invocation, for those that have not been defined yet!s
return new $class( $typeId );
}
/**
* @since 2.5
*
* @param DataValue $dataValue
*
* @return ValueParser
*/
public function getValueParser( DataValue $dataValue ) {
return $this->containerBuilder->singleton( self::TYPE_PARSER . $dataValue->getTypeID() );
}
/**
* @since 2.5
*
* @param DataValue $dataValue
*
* @return ValueFormatter
*/
public function getValueFormatter( DataValue $dataValue ) {
$id = self::TYPE_FORMATTER . $dataValue->getTypeID();
if ( $this->containerBuilder->isRegistered( $id ) ) {
$dataValueFormatter = $this->containerBuilder->singleton( $id );
} else {
$dataValueFormatter = $this->getDispatchableValueFormatter( $dataValue );
}
$dataValueFormatter->setDataValue(
$dataValue
);
return $dataValueFormatter;
}
/**
* @since 2.5
*
* @return ConstraintValueValidator
*/
public function getConstraintValueValidator() {
return $this->containerBuilder->singleton( self::TYPE_VALIDATOR . 'CompoundConstraintValueValidator' );
}
/**
* @since 2.5
*
* @return PropertySpecificationLookup
*/
public function getPropertySpecificationLookup() {
return $this->containerBuilder->singleton( 'PropertySpecificationLookup' );
}
/**
* @since 3.0
*
* @return PropertyRestrictionExaminer
*/
public function getPropertyRestrictionExaminer() {
$propertyRestrictionExaminer = $this->containerBuilder->singleton( 'PropertyRestrictionExaminer' );
$propertyRestrictionExaminer->setUser(
$GLOBALS['wgUser']
);
return $propertyRestrictionExaminer;
}
private function getDispatchableValueFormatter( $dataValue ) {
if ( $this->dispatchingDataValueFormatter === null ) {
$this->dispatchingDataValueFormatter = $this->newDispatchingDataValueFormatter();
}
return $this->dispatchingDataValueFormatter->getDataValueFormatterFor( $dataValue );
}
private function newDispatchingDataValueFormatter() {
$dispatchingDataValueFormatter = new DispatchingDataValueFormatter();
// To be checked only after DispatchingDataValueFormatter::addDataValueFormatter did
// not match any previous registered DataValueFormatters
$dispatchingDataValueFormatter->addDefaultDataValueFormatter(
$this->containerBuilder->singleton( self::TYPE_FORMATTER . StringValue::TYPE_ID )
);
$dispatchingDataValueFormatter->addDefaultDataValueFormatter(
$this->containerBuilder->singleton( self::TYPE_FORMATTER . NumberValue::TYPE_ID )
);
$dispatchingDataValueFormatter->addDefaultDataValueFormatter(
$this->containerBuilder->singleton( self::TYPE_FORMATTER . TimeValue::TYPE_ID )
);
$dispatchingDataValueFormatter->addDefaultDataValueFormatter( new NoValueFormatter() );
return $dispatchingDataValueFormatter;
}
}
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